Well i made this ourdoor accesspoint solution with a RB333 + 2x RB52 + 1x RB52H
But i'm lazy, and what if it looses the RouterOS/NAND fails or another problems that needs serial attention?
I found a USB over CAT5-6, in this case called "USB Extender" i have then plug'd a USB->Serial cable in and made a null model cable to the routerboard.
The USB Extender let's made run a cable for up to 60meters to the buttom where i have the RJ45->USB converter.
Now i have a serial connection to my routerboard in my tower installation (about 50meters up)...
This solution cost's about 100€ but a crane will cost me about 300€ per hour! and i save time...
This is "Version 1" and more will come in the furture...
Hope other's can use this solution in their solutions

And please post what you think!